This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A134606 #18 Apr 09 2025 20:24:30
%S A134606 16,81,351,512,625,1080,1260,1350,1375,1792,1836,2070,2145,2175,2401,
%T A134606 2730,2772,3510,4104,4305,4625,4650,4655,4998,5880,6000,6545,7098,
%U A134606 7182,7791,7889,7956,9030,9108,9295,9324,10098,10368,10545,11628,11935,12096
%N A134606 Numbers such that the square root of the sum of squares of their prime factors is a nonprime integer.
%C A134606 No prime number is a term. - _Hieronymus Fischer_, Apr 19 2011
%H A134606 Hieronymus Fischer, <a href="/A134606/b134606.txt">Table of n, a(n) for n = 1..10000</a>
%e A134606 a(3)=351, since 351=3*3*3*13 and sqrt(3*3^2+13^2)=sqrt(196)=14.
%t A134606 f[{a_,b_}]:=Table[a,b];Select[Range[2,12096],!PrimeQ[Sqrt[Total[Flatten[f/@FactorInteger[#]]^2]]]&&IntegerQ[Sqrt[Total[Flatten[f/@FactorInteger[#]]^2]]]&] (* _James C. McMahon_, Apr 09 2025 *)
%Y A134606 Cf. A001597, A025475, A134333, A134344, A134376.
%Y A134606 Cf. A134600, A134602, A134608, A134611, A134616, A134618, A134620.
%K A134606 nonn
%O A134606 1,1
%A A134606 _Hieronymus Fischer_, Nov 11 2007